Hi
The enclosure has 1/2 inch cement board screwed directly on top of the wood studs. The tile (4x4 irregular edge) is going to be installed directly onto the cement board. Is this adequate protection for moisture.
Additionally the cement board extends about 3 inches beyond the dry side of the shower enclosure where it butts up against green board and had been feathered in to the greenboard with mesh tape and drywall mud.
Is there any problem with this type of installation.
Thanks, Martin
Most tiled shower leaks are a result of the shower pan leaking. That is the membrane used in the basin. So what is your basin made of? Tile, plastic pan? Another source of leakage can be the transition from tile to plastic shower pan.
For how long? Greenboard is not an acceptable substrate in showers or tubs.
If you don't know, don't answer.
So you're tiling just 2 walls. Without drywall behind the cement board will the cement board overlap the lip on the back of the Kohler basin? If so you shouldn't have any problems. Personally I use mortar substrates for all tile applications, but even so the cement board would be better if placed over drywall. Less flex between the studs. Leave the bottom row of tile up an 1/8" off of the basin and use (i hate to say it) silicone at that joint.
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